Every minute in our days is witnessing the birth of a new generation, new machines, and different technologies according to different human needs, and every day we hear a new name for modern science that serves different categories and different needs, and in the science of images and photography a boom has been called the science of hologram, which works to embody images using Lasers.

What is a hologram?
One of the most important findings of modern science in the field of images and imaging is the idea of ​​the science of holograms or the so-called Holography, or blue ray. It is the science that works to reconfigure the images of 3D objects using lasers. Where the laser is one of the purest known types of light, and what He distinguishes him that he has the same frequency, so that he appears using images embodied with lights in the air without a source of light, and without a surface for the reflection of light on him, so things appear to be real in front of us, except that when we come close to feel them, we cannot do this, they are just images in the air and not real bodies, and we can pass our hands Through it, this th was superior Technology on 3D technology that shows 3D images using special glasses.

The idea of ​​a hologram
The idea of ​​a hologram depends on the interference of lasers, by adopting the laws of waves in physics. When two peaks of two waves converge, they unite to form a larger wave twice, but if the top of a wave meets the bottom of another wave, the two waves do not exist, forming a still region. This science relies on a very complex network of complex wave interference, which is recorded on a board which is called a hologram.

History of this science and how it works
Stereoscopic imaging known as a hologram differs from regular imaging in several basic axes, the most important of which are: it depends on recording the wave amplitude of the body and its development, and the image is formed in space and not on paper, as in regular imaging, and the imaging image using the hologram cannot be distinguished from the original body definitely. The history of this science dates back to 1947, when scientist Dennis Gabor tried to improve the magnification power of the electron microscope, and because of the scarcity of optical resources at the time, the emergence of stereoscopy was delayed until the appearance of lasers in 1960, so the work was done by the scientist Gioris Obatnix on the use of laser and holograms as a triple display medium Dimensions. In 1972 experiments began successively, until the scientists reached to divide the beams of lasers into two parts; half of them fall onto a flat mirror that splits the rays and reflects them on a photographic plate, and these rays are called the reference rays .. and the other part of the rays falls on the object to be photographed, and these rays are called rays The body, when the two rays meet, produces radiation interference in dark and bright areas.

Its uses and advantages
Stereoscopic photography can be applied for several purposes and goals, the most important of which are: it was not commercial advertising in the way products are presented, and in photographing fictional films and scientific films, which appear to a person that he sees spirits moving in front of him and cannot touch them, as it is currently used to eliminate forgery; Not by cameras, not even by a scanner known as a “scanner”, but this science still needs to be developed because technical problems are related to displays.

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